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Coercivity enhancement of Dy-coated Nd-Fe-B flakes by crystallization
http://hdl.handle.net/10069/25449
http://hdl.handle.net/10069/25449201edee5-47e9-4637-86a4-624040e0fd58
名前 / ファイル | ライセンス | アクション |
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JAP109_07A701.pdf (1.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2011-08-01 | |||||
タイトル | ||||||
タイトル | Coercivity enhancement of Dy-coated Nd-Fe-B flakes by crystallization | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Fukunaga, Hirotoshi
× Fukunaga, Hirotoshi× Sugimoto, Y.× Nakano, Masaki× Yanai, Takeshi× Ohta, S.× Itakura, M.× Nishida, M. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The coercivity of isotropic Dy-coated Nd-Fe-B flakes was enhanced by crystallization and simultaneous diffusion of Dy from their surfaces. Amorphous Dy-coated Nd-Fe-B flakes were crystallized by heating them to 923 K 2over a 2 min period followed by rapid cooling. During crystallization, the Dy on the surface diffused into the flakes. This low-temperature rapid annealing produced flakes with fine grains and the Dy diffusion enhanced their coercivity. The coercivity after crystallization increased with increasing Dy layer thickness, although the remanence decreased when the layer thickness exceeded 3 μm. Thick coatings of over 6 μm resulted in the formation of DyFe2, which degraded the magnetic properties of the crystallized flakes. Flakes with a 3-μm-thick coating exhibited excellent magnetic properties after annealing: They had a coercivity of 1880 kA/m and a remanence of 78 emu/g. This coercivity is approximately 500 kA/m higher than that of uncoated flakes, whereas the remanence is comparable to that of uncoated flakes. | |||||
書誌情報 |
Journal of Applied Physics 巻 109, 号 7, p. 07A701, 発行日 2011-04-01 |
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出版者 | ||||||
出版者 | American Institute of Physics | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00218979 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10897550 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00693547 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/1.3549604 | |||||
権利 | ||||||
権利情報 | © 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.The following article appeared in [Journal of Applied Physics, 109(7), 07A701; 2011] and may be found at http://dx.doi.org/10.1063/1.3549604. | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal of Applied Physics, 109(7), 07A701; 2011 |